California was poised Monday to become the first state to provide health care coverage to young, low-income adults living in the country illegally after legislative leaders provided a thumbs-up to Gov. Gavin Newsom’s $98 million plan targeting almost 100,000 low-income adults.

The full Legislature still must sign off on the plan that would make such immigrants 19 to 25 eligible for Medi-Cal, the state’s Medicaid program. […]